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Streamflow Measurements for the Nation

! Streamflow measurement pages will be decommissioned in early 2026. Please find the modernized pages in WDFN that suit you best. Learn more about our modernization plans and timeline and new pages.

USGS 11274790 TUOLUMNE R A GRAND CYN OF TUOLUMNE AB HETCH HETCHY
Tuolumne County, California
Hydrologic Unit Code 18040009
Latitude  37°55'00", Longitude 119°39'32" NAD27
Drainage area 301  square miles
Gage datum 3,813.65 feet above NAVD88
Output formats
HTML table with channel data
HTML table without channel data
Tab-separated data with channel data
Tab-separated data without channel data
Graph of data
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Meas.
Number		   Date       Time Time
Datum		 Measurement
Used?		   Who Measuring
Agency		 Stream
flow
(ft3/s)		 Gage
Height
(ft)		 GH
Change
(ft)		 Meas.
Duration
(hr)		 Meas.
Rated		   Control Flow
Adjust.
Code 		 Channel
Number		 Channel
Name		 Meas.
type 		 Stream
flow
method 		 Velocity
method 		 Channel
flow
(ft3/s)		 Channel
width
(ft)		 Channel
area
(ft2)		 Channel
vel.
(ft/s)		 Channel
stability 		 Channel
material 		 Channel
evenness 		 Long.
vel.
desc. 		 Horz.
vel.
desc. 		 Vert.
vel.
desc. 		 Channel
loc.
code 		 Channel
loc.
dist.(ft)
632025-10-15 11:36:29PDTYesKBARRIOSUSGS96.68.02-0.031.40PoorClearNONE1mainWADEQSCMMVADV96.668.081.51.19FIRMBLDRUNEVPULSUNEVNSTDUPST260.00
622025-08-27 10:34:17PDTYesKBARRIOSUSGS2388.93-0.010.24FairClearNONE1mainCWAYQADCPVADCP23877.63010.79FIRMBLDRUNEVPULSUNEVSTNDUPST400.00
612025-07-08 12:02:58PDTYesKBARRIOSUSGS2308.780.010.50PoorClearNONE1mainMBOTQADCPVADCP23063.13120.74FIRMBLDRUNEVPULSUNEVNSTDUPST530.00
602025-05-21 15:15:16PDTYesKBARRIOS/YGAUSGS239012.940.030.41PoorClearNONE1mainMBOTQADCPVADCP239011831600.76FIRMLDGEUNEVPULSUNEVNSTDDNST700.00
592024-10-15 14:03:37PDTYesKBARRIOS/AMIUSGS7.216.670.002.18PoorClearNONE1mainWADEQSCMMVADV7.2128.548.10.15FIRMLDGEUNEVPULSUNEVNSTDDNST90.00
582024-09-04 13:01:18PDTYesKBARRIOSUSGS18.37.010.001.13PoorClearNONE1mainWADEQSCMMVADV18.331.633.80.54FIRMBLDREVENSTDYUNEVNSTDDNST30.00
572024-07-24 13:28:58PDTYesKBARRIOSUSGS2408.720.010.23PoorClearNONE1mainMBOTQADCPVADCP24074.63380.71FIRMBLDRUNEVPULSEVENNSTDUPST475.00
562024-06-05 14:33PDTNo
552024-06-05 13:51:32PDTYesKBARRIOS/YGAUSGS282013.760.030.40PoorClearNONE1mainMBOTQADCPVADCP282014231500.90FIRMBLDRUNEVPULSUNEVNSTDDNST600.00
542023-10-11 12:26:56PDTYesKBARRIOS/JCHUSGS50.27.570.002.00PoorClearNONE1mainWADEQSCMMVADV50.251.01050.48FIRMBLDREVENPULSUNEVNSTDDNST80.00
532023-08-31 11:29:07PDTYesYGAO/JCHASEUSGS1958.710.010.25PoorClearNONE1CheckMBOTQADCPVADCP19583.53000.65FIRMBLDRUNEVSTDYUNEVNSTDUPST600.00
522023-08-31 11:03:27PDTYesYGAO/JCHASEUSGS1938.710.010.23PoorClearNONE1MainMBOTQADCPVADCP19383.52950.66FIRMBLDRUNEVSTDYUNEVNSTDUPST600.00
512023-06-29 15:19PDTYesKBARRIOSUSGS339015.15-0.080.66PoorClearNONE1mainMBOTQSCMMVADCP339074.520801.63FIRMLDGEEVENPULSEVENNSTDDNST800.00
502022-10-04 13:12:27PDTYestrhiett/kbarUSGS16.87.000.010.90PoorClearNONE1mainWADEQSCMMVADV16.841.058.20.29FIRMLDGEUNEVSTDYEVENUNFMDNST200.00
49F2022-10-03 13:00PDTNo
49E2022-10-03 13:00PDTNo
49D2022-10-03 13:00PDTNo
49C2022-10-03 13:00PDTNo
49B2022-10-03 13:00PDTNo
49A2022-10-03 13:00PDTNo
482022-08-09 13:42:29PDTYestrhiett/kbarUSGS99.28.060.001.50PoorClearNONE1mainWADEQSCMMVADV99.268.080.21.24FIRMBLDRUNEVPULSUNEVNSTDUPST300.00
472022-06-13 14:00:08PDTYestrhiett/jrgrUSGS83410.95-0.020.40PoorClearOTHR1mainRCQADCPVADCP84196.84221.99FIRMBLDRUNEVSTDYEVENNSTDUPST600.00
462022-06-13 13:21:23PDTYestrhiett/jrgrUSGS85410.960.000.40PoorClearOTHR1mainRCQADCPVADCP88093.74082.16FIRMBLDRUNEVSTDYEVENNSTDUPST600.00
452022-05-19 14:30:43PDTNo
442020-10-19 12:23:52PDTYesBDCUSGS4.786.540.000.60PoorClearNONE11WADEQSCMMVADV4.7850.567.40.07FIRMBLDRUNEVSTDYEVENSTNDUPST500.00
432020-09-03 11:39:17PDTYesTRHUSGS16.76.930.000.73PoorClearNONE1MainWADEQSCMMVADV16.760.055.60.30UNSPUNSPUNSPUNSPUNSPUNSPUNSP
422020-06-11 11:43PDTYesJDJ/ JFCUSGS51510.080.020.75PoorClearOTHR1MainCWAYQADCPVADCP515 unknunknunknunknunknUNKNunkn
412020-02-27 11:52:04PSTYesJDJ/MDR/TRHUSGS96.08.000.002.00PoorClearNONE1mainWADEQSCMMVADV96.075.01590.60FIRMBLDRUNEVSTDYEVENSTNDUPST750.00
402019-12-09 12:17:32PSTYesJDJ/TRHUSGS46.17.570.051.00PoorClearNONE1mainWADEQSCMMVADV46.165.058.90.78FIRMLDGEUNEVSTDYUNEVSTNDUPST500.00
392019-10-10 12:08PDTYesJDJUSGS15.46.980.011.00PoorClearNONE1mainWADEQSCMMVADV15.459.092.10.17FIRMBLDRUNEVSTDYUNEVNSTDUPST500.00
372019-05-02 11:41:22PDTNo
382019-04-25 13:42:06PDTNo
352018-12-20 12:49:24PSTYesJDJ/MAOUSGS55.17.770.011.00PoorClearNONE1mainWADEQSCMMVADV55.146.01070.51FIRMLDGEUNEVSTDYUNEVNSTDDNST150.00
342018-10-18 14:46:54PDTYesJDJ/YSG/DWBUSGS15.86.870.001.00PoorClearNONE1mainWADEQSCMMVADV15.848.092.70.17FIRMLDGEUNEVSTDYUNEVSTNDDNST100.00
332018-10-18 13:26:12PDTYesJDJ/YSG/DWBUSGS15.76.870.001.00PoorClearNONE1mainWADEQSCMMVADV15.740.560.00.26FIRMLDGEUNEVSTDYEVENUNFMDNST100.00
322018-08-16 13:15PDTYesJDJ / TRHUSGS57.77.650.021.00PoorClearNONE1mainWADEQSCMMVADV57.735.083.20.69FIRMLDGEUNEVSTDYUNEVNSTDDNST125.00
312017-10-12 14:25:01PDTYesJRGUSGS42.87.48-0.010.75PoorClearNONE1MainWADEQSCMMunkno42.843.064.60.66FIRMLDGEEVENunknEVENSTNDDNST125.00
302016-10-06 12:08PDTYesJRGUSGS17.26.730.000.70PoorVegetationLightNONE1MainWADEQSCMMVPYG17.241.035.10.49FIRMBLDRUNEVunknEVENSTNDUPST200.00
292016-10-06 11:29PDTYesJRGUSGS15.06.740.000.60PoorVegetationLightNONE1MainWADEQSCMMVPYG15.041.031.00.48FIRMBLDRUNEVunknEVENSTNDUPST200.00
282016-08-25 13:05:30PDTYesJRGUSGS30.77.230.001.50PoorClearNONE1MainWADEQSCMMVPAA30.741.068.40.45FIRMLDGEUNEVunknEVENNSTDDNST125.00
272015-10-07 12:38:44PDTYesSJBUSGS22.77.030.000.60PoorVegetationLightNONE1mainWADEQSCMMVPAA22.739.059.20.38FIRMLDGEUNEVunknUNEVSTNDDNST125.00
262015-09-02 13:12:36PDTYesSJBUSGS16.56.860.000.40PoorVegetationLightNONE1mainWADEQSCMMVPAA16.544.070.40.23FIRMLDGEUNEVunknUNEVSTNDDNST120.00
252015-06-30 13:13:28PDTYesSJB/ORBUSGS2328.490.000.90PoorClearNONE1mainWADEQSCMMVPAA23275.01241.88FIRMBLDRUNEVunknUNEVNSTDUPST200.00
242014-10-08 14:12:19PDTYesSJB/JKHUSGS19.36.690.000.50PoorVegetationLightNONE1mainWADEQSCMMVPAA19.354.073.60.26FIRMLDGEUNEVunknUNEVSTNDDNST150.00
232014-07-15 13:09:43PDTYesSJB/GCUSGS88.87.840.000.50PoorVegetationLightNONE1mainWADEQSCMMVPAA88.868.092.70.96FIRMBLDRUNEVunknUNEVSTNDUPST300.00
222013-10-22 14:57:42PDTYesSJBUSGS15.66.740.000.70PoorVegetationLightNONE1mainWADEQSCMMVPAA15.662.01090.14FIRMBLDRUNEVunknUNEVSTNDDNST150.00
212013-08-15 14:09:52PDTYesSJB/MRHUSGS24.77.05-0.011.50PoorClearNONE1tuolumne r at grand canyon,CA.WADEQSCMMVPAA24.773.092.60.27FIRMBLDRUNEVunknEVENSTNDUPST400.00
202013-07-18 14:24:40PDTYesSJBUSGS94.07.780.000.80PoorVegetationLightNONE1mainWADEQSCMMVPAA94.065.094.70.99FIRMBLDRUNEVunknUNEVSTNDUPST150.00
192012-09-17 13:39:01PDTYesTRHUSGS13.16.880.000.50PoorClearNONE11WADEQSCMMVPAA13.133.028.10.47FIRMBLDRUNEVunknUNEVUNFMUPST300.00
182012-08-22 12:49:46PDTYesTRHUSGS64.07.60-0.010.50PoorClearNONE11WADEQSCMMVPAA64.060.066.70.96FIRMBLDRUNEVunknUNEVUNFMUPST250.00
172012-07-25 13:59:51PDTYesTRHUSGS82.37.67 PoorClearNONE11WADEQSCMMVPAA82.360.073.41.12FIRMBLDRUNEVunknUNEVUNFMUPST220.00
162011-10-26 12:22:48PDTYesTRHUSGS87.57.850.000.50PoorClearNONE11WADEQSCMMVPAA87.561.079.71.10FIRMBLDRUNEVunknEVENUNFMUPST400.00
152011-10-04 11:58:46PDTYesTRHUSGS74.87.610.000.50PoorClearNONE1mainWADEQSCMMVPAA74.862.068.71.09FIRMBLDRUNEVunknUNEVUNFMUPST400.00
142011-10-04 11:26:11PDTYesTRHUSGS68.37.610.000.50PoorClearNONE1mainWADEQSCMMVPAA68.361.065.51.04FIRMBLDRUNEVunknUNEVNSTDUPST400.00
132010-10-13 14:38PDTYesTRHUSGS1167.970.000.50PoorClearNONE1Channel 1WADEQSCMMVPAA11670.095.41.21FIRMBLDRUNEVunknEVENUNSPUPST300.00
122010-09-01 13:40PDTYesTRHUSGS35.47.320.000.50PoorClearNONE1Channel 1WADEQSCMMVPAA35.440.049.20.72FIRMLDGEUNEVunknEVENUNKNDNST150.00
112009-08-13 11:27PDTYesTRHUSGS59.87.760.000.50PoorClearNONE1Channel 1WADEQSCMMVPAA59.850.066.10.90FIRMBLDRUNEVunknUNEVUNSPUPST400.00
102008-10-07 12:32PDTYesTRHUSGS22.77.050.000.50PoorClearNONE1Imported Channel 1WADEQSCMMVPAA22.741.043.10.53FIRMBLDRUNEVunknUNEVUNSPUPST400.00
92008-08-28 13:11PDTYesTRHUSGS18.67.110.000.50PoorClearNONE1Imported Channel 1WADEunspeunkno18.651.038.80.48UNSPUNSPUNSPunknUNSPUNSPUNSP
82008-08-13 10:54PDTYesTRHUSGS34.87.370.000.50PoorClearNONE1Imported Channel 1WADEunspeunkno34.847.051.40.68UNSPUNSPUNSPunknUNSPUNSPUNSP
52007-10-04 11:47PDTYesTRHUSGS11.56.760.000.50PoorClearNONE1Imported Channel 1WADEunspeunkno11.536.037.10.31UNSPUNSPUNSPunknUNSPUNSPUNSP
42007-08-22 13:48PDTYesTRHUSGS15.86.970.000.60PoorClearNONE1Imported Channel 1WADEunspeunkno15.840.040.70.39UNSPUNSPUNSPunknUNSPUNSPUNSP
32007-07-16 13:10PDTYesTRHUSGS68.47.79-0.010.70PoorClearNONE1Imported Channel 1WADEunspeunkno68.451.066.01.04UNSPUNSPUNSPunknUNSPUNSPUNSP
22007-06-27 11:30PDTYesTRHUSGS1368.400.000.70PoorClearNONE1Imported Channel 1WADEunspeunkno13677.01380.98UNSPUNSPUNSPunknUNSPUNSPUNSP
12006-10-18 12:30PDTYesTRHUSGS16.06.990.000.50PoorClearNONE1Imported Channel 1WADEunspeunkno16.040.050.80.30UNSPUNSPUNSPunknUNSPUNSPUNSP